Classroom language : Hurrying up the final activity

“Just five minutes till the end of the class, so just two minutes more for that activity”“One minute!… Thirty seconds!…Ten, nine, eight, seven, six, five, four, three, two, one, a half, a quarter, an eighth, a sixteenth, stop!!”“Just finish that sentence/ exercise/ paragraph/ question and then put your pens down”"Time's up!" Everyone stop doing!